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Author Morin, S.; Savarino, J.; Frey, M.M.; Yan, N.; Bekki, S.; Bottenheim, J.W.; Martins, J.M.F. url  openurl
  Title Tracing the Origin and Fate of NOx in the Arctic Atmosphere Using Stable Isotopes in Nitrate Type Journal Article
  Year (down) 2008 Publication Science Abbreviated Journal Science  
  Volume 322 Issue 5902 Pages 730-732  
  Keywords  
  Abstract Atmospheric nitrogen oxides (NOx =NO+ NO2) play a pivotal role in the cycling of reactive nitrogen (ultimately deposited as nitrate) and the oxidative capacity of the atmosphere. Combined measurements of nitrogen and oxygen stable isotope ratios of nitrate collected in the Arctic atmosphere were used to infer the origin and fate of NOx and nitrate on a seasonal basis. In spring, photochemically driven emissions of reactive nitrogen from the snowpack into the atmosphere make local oxidation of NOx by bromine oxide the major contributor to the nitrate budget. The comprehensive isotopic composition of nitrate provides strong constraints on the relative importance of the key atmospheric oxidants in the present atmosphere, with the potential for extension into the past using ice cores.  
  Programme 1011  
  Campaign  
  Address  
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  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0036-8075 ISBN Medium  
  Area Expedition Conference  
  Notes 10.1126/science.1161910 Approved yes  
  Call Number IPEV @ Thierry.Lemaire @ Serial 5513  
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